分段结构的钨丝/锆基非晶复合材料弹芯穿甲实验研究  

An Experimental Study on Perforation Behavior of Segmented W_f/Zr-Based Bulk Metallic Glass Matrix Composite

作　　者：杜忠华[1] 杜成鑫[1] 朱正旺[2] 夏龙祥 

机构地区：[1]南京理工大学,江苏南京210094 [2]中国科学院金属研究所,辽宁沈阳110016

出　　处：《稀有金属材料与工程》2016年第9期2359-2365,共7页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(11372142);爆炸科学与技术国家重点实验室(北京理工大学)开放基金(KFJJ12-9M)

摘　　要：为了研究不同结构和材料弹芯的侵彻能力,采用80%体积分数的钨丝/锆基非晶复合材料(钨丝直径0.3 mm)弹芯,在1450~2100 m/s速度范围内,对不同结构方案的弹芯垂直侵彻均质靶板进行了实验研究。结果表明:(1)材料的性能和结构都可以影响弹丸的侵彻效率,突破了传统认识,为复合材料杆式穿甲弹设计提供了重要依据;(2)弹芯结构不同,其侵彻深度-着靶速度变化曲线也不同,对于两段和三段结构弹芯其侵彻曲线变化是凸的,其侵彻深度峰值分别出现在着靶速度1750~1800 m/s和1850 m/s附近,最大侵彻穿深均为x=1.7L;对于未分段弹芯,其侵彻深度-速度变化曲线呈渐近线变化,在速度大于1850 m/s时接近于流体动力学极限穿甲深度L·(ρ/2p/ρt)^(1/2),约为1.5L;(3)结合单向纤维复合材料的动态破坏特点、动态裂纹传播和弹芯高速撞击的侵蚀速度特性,给出了最优分段概念,分析了(2)中发现的问题的原因,为分段弹芯结构设计提供了参考。In the velocity range from 1450 m/s to 2100 m/s, the penetrators prepared by Zr-based metallic glass composites with tungsten fiber of 80% volume fraction and 0.3 mm diameter were used to perforate 30 Cr Mn Mo steel plates. Results are as follows.（i） The penetration efficiency is influenced by properties and structure of the material, which is helpful to design the rod penetrator of composite material.（ii） For the different structures of the penetrator, curves of penetration depth with velocity are different. The curves of the penetrator with two segments and three segments structures are convex, and at 1750～1800 m/s and 1850 m/s they arrive to the maximums which are both 1.7L. For the monolithic penetrator, however, the curve is asymptote, and above 1850 m/s the penetration depth approaches to the hydrodynamic limit which is L·（ρp/ρt）^1/2, about 1.5 L.（iii） According to the dynamic damage characteristics of the unidirectional fiber reinforced composite materials, the characteristics of dynamic crack propagation and erosion velocity of impact, the optimal segmentation is defined, and the problem in（ii） is solved, providing a reference for structure design of segment penetrators.

关 键 词：分段 钨丝/锆基非晶复合材料 高速侵彻 侵彻效率 

分 类 号：TJ410[兵器科学与技术—火炮、自动武器与弹药工程] TB33[一般工业技术—材料科学与工程]